package lab02.test02;

/**
 * Created by 123 on 2017/10/12.
 */
public class Round {
    //1 属性
    double area;
    double perimeter;

    //2行为
    double area(double rahius) {
        double area;
        area = 3.14 * rahius * rahius;
        return area;
    }

    double perimeter(double rahius) {
        double perimeter;
        perimeter = 6.28 * rahius;
        return perimeter;

    }

    //3方法


}

